How it Works
Delfield
Loading...
18682VDR93
Service Manual
28 pgs1.13 Mb0

Delfield 18682VDR93 Service Manual

Refrigeration Units
Please read this manual completely before attempting to service this equipment.
SERVICE
MANUAL
Versa Drawer
MODELS: F17VD84 F18VD50 F18VD82 F2984VDL F2984VDR
18650VDL 18650VDR 18682VDL 18682VDR
Drawer
Drawer
1
3
Drawer
Drawer
4
2
Drawer
1
Drawer
2
Drawer
1
Drawer
2
RETAIN THIS MANUAL FOR FUTURE REFERENCE.
Delfield 980 S. Isabella Rd., Mt. Pleasant, MI 48858
February 2007
Delfield
IMPORTANT WARNINGS AND SAFETY INFORMATION
WARNING
ANY REFRIGERATION SERVICE PROCEDURES DESCRIBED IN THIS MANUAL MUST BE PERFORMED BY A CERTIFIED EPA TECHNICIAN.
Read this manual thoroughly before installing, operating, or performing maintenance on the equipment.
FAILURE TO FOLLOW INSTRUCTIONS IN THIS MANUAL CAN CAUSE PROPERTY DAMAGE, INJURY OR DEATH.
• Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance.
• Unless all covers and access panels are in place and properly secured, do not operate this equipment.
• Damp or wet hands may stick to cold surfaces.
• Allow heated equipment to cool down before attempting to clean or service.
• Read and understand instruction manuals and labels. Learn all applications and restrictions for the service performed.
• Do not remove ground prong from service equipment cords.
• Use extension cords rated for the intended service and as short in length as possible.
• Use refrigerant hoses SAE J196-1992 approved with a shutoff device within 12 inches of the ends.
• Make sure recovery tanks are DOT approved for use with the type of refrigerant being serviced.
• Service units only in well ventilated areas using mechanical ventilation systems.
• Follow all accessory advisories and instructions.
• Do not operate any unit with defective or damaged parts.
WARNING
Serious injury or death can occur from inhaling high concentrations of refrigerant vapors. These vapors also reduce oxygen levels in confined areas. Contact with liquid can cause frostbite. All containers, equipment and hoses are under high pressure. Do not puncture or damage these components.
CAUTION
Observe the following:
• Keep the equipment area free and clear of combustible material.
• Maintain adequate clearance for air openings.
• Operate equipment only on the type of electricity indicated on the data plate.
• Unplug the unit before making any repairs.
• Handle all refrigerant hoses, recovery tanks, lines and other vessels as containers under pressure at all times.
• Retain this manual for future reference.
2
Versa Drawer Refrigeration Units
TABLE OF CONTENTS
IMPORTANT WARNINGS AND SAFETY INFORMATION ....................................................................... 2
INTRODUCTION ..................................................................................................................................... 5
GENERAL ........................................................................................................................................ 5
MODEL NUMBER ............................................................................................................................ 5
SERIAL NUMBER ............................................................................................................................ 5
HEATING SYSTEM .......................................................................................................................... 5
REFRIGERATION SYSTEM ............................................................................................................. 5
TEMPERATURE MONITORING ....................................................................................................... 5
CONTROLLER ................................................................................................................................. 5
SPECIFICATIONS ............................................................................................................................ 6
Refrigeration System .................................................................................................................. 6
Electrical Connections ............................................................................................................... 6
Drawers ...................................................................................................................................... 6
Legs ........................................................................................................................................... 6
Casters ...................................................................................................................................... 6
INSTALLATION ................................................................................................................................. 6
OPERATION ..................................................................................................................................... 6
OPERATOR MAINTENANCE ........................................................................................................... 6
COMPONENT REMOVAL AND REPLACEMENT ................................................................................... 7
COVERS AND PANELS ................................................................................................................... 7
Front Louvered Panel.................................................................................................................. 7
Louvered Access End Panel ...................................................................................................... 7
Rear Panel ................................................................................................................................. 7
DRAWER ASSEMBLY ...................................................................................................................... 7
Drawer Removal ......................................................................................................................... 7
Drawer Gasket ........................................................................................................................... 7
Drawer Front Assembly .............................................................................................................. 7
Return Air Baffle......................................................................................................................... 8
Drawer Switch ............................................................................................................................ 8
EVAPORATOR COIL ASSEMBLY COVER ....................................................................................... 8
EVAPORATOR COIL ASSEMBLY .................................................................................................... 9
EXPANSION VALVE ......................................................................................................................... 9
CONDENSER FAN BLADE .............................................................................................................. 9
CONDENSER FAN MOTOR ........................................................................................................... 10
CONDENSER COIL ........................................................................................................................ 10
COMPRESSOR .............................................................................................................................. 10
ACCUMULATOR/RECEIVER .......................................................................................................... 11
FILTER DRYER .............................................................................................................................. 11
SOLENOID VALVES ...................................................................................................................... 11
PRESSURE TRANSDUCER ........................................................................................................... 12
BOX TEMPERATURE SENSOR ..................................................................................................... 12
3
Delfield
DISPLAY CONTROL BOARD ......................................................................................................... 12
ELECTRIC INPUT/OUTPUT (I/O) CONTROL BOARD .................................................................... 13
LEGS .......................................................................................................................................... 13
CASTERS ...................................................................................................................................... 17
CONTROL CONSOLE ........................................................................................................................... 14
CHANGING DRAWER MODES ...................................................................................................... 14
MANUAL DEFROST ....................................................................................................................... 14
PROGRAM MENU.......................................................................................................................... 14
SET POINTS.................................................................................................................................. 15
CONFIGURATION .......................................................................................................................... 15
DIAGNOSTICS ............................................................................................................................... 15
TIME AND DATE ............................................................................................................................ 15
SOFTWARE VERSIONS ................................................................................................................ 15
TROUBLESHOOTING ........................................................................................................................... 16
GENERAL ...................................................................................................................................... 16
DIAGNOSTICS ............................................................................................................................... 16
TROUBLESHOOTING CHART ....................................................................................................... 16
CIRCUIT AND CONTROL DIAGRAMS ................................................................................................. 18
STANDARD LABOR GUIDELINES TO REPAIR OR REPLACE PARTS
ON DELFIELD EQUIPMENT ................................................................................................................ 23
MANUFACTURER'S LIMITED LIFETIME WARRANTY ......................................................................... 24
STANDARD ONE YEAR WARRANTY.................................................................................................... 25
ADDITIONAL FOUR YEAR PROTECTION PLAN (for Motor-Compressor only) ..................................... 26
4
INTRODUCTION
Versa Drawer Refrigeration Units
GENERAL
Versa Drawer series refrigeration units have two or four drawers, each of which can operate in one of four modes at any time. The two-drawer and four-drawer models feature countertop-height stainless steel work surfaces. A two-drawer Lo Profile unit is also available.
Refrigeration mode: The drawer operates as a refrigerator, maintaining the refrigeration set point between 32°F and 41°F.
Freezer mode: The drawer operates as a self-defrosting freezer, maintaining the freezer set point between -5°F and 5°F.
Thaw Cabinet mode: The drawer operates as a thaw cabinet, maintaining the thaw cabinet set point between 32°F and 50°F using hot gas and refrigeration as required for a fixed time period. Once the period has elapsed, the drawer mode is changed to refrigeration mode.
Convenience Chiller mode: The drawer operates as a convenience chiller, maintaining the convenience chiller set point between -5°F and 25°F for four hours. Once the period has elapsed, the drawer mode is changed to refrigeration mode.
All units have stainless steel exteriors and interiors. Drawer gaskets are magnetic and mount to the drawer, snapping in place. The gaskets are removable without tools.
This manual covers standard units. If you have a custom unit, consult the service department at 800-733-8829.
SERIAL AND MODEL NUMBERS
THAW SYSTEM
Hot gas is used for the thaw cabinet operation and the defrost mode. A hot gas solenoid controls the heat. In the defrost mode the hot gas will be used to warm the evaporator coil when a drawer is used as a thaw cabinet. The hot gas solenoid will open to maintain drawer temperature.
REFRIGERATION SYSTEM
The refrigeration system is used in all modes. The refrigeration solenoid controls refrigerant. Two compressors run in parallel operation in a four-drawer system while one compressor operates the two-drawer system.
TEMPERATURE MONITORING
Temperature sensors are located in each drawer. The drawer temperature is displayed on the control panel.
CONTROLLER
The controller provides information indicating the drawer mode. In addition, the actual temperature of the drawer is displayed. The push button tabs, located next to the display screen, represent each drawer. These tabs are used to select the drawer for control. The control display located on the right side of the control panel is used to toggle between control screens and to select drawer modes and temperatures.
The serial and model numbers are located inside Drawer 1 on the left side.
Serial and Model Number
location
5
Delfield
SPECIFICATIONS
MODEL COMP HEIGHT WIDTH DEPTH NO. OF SHIP NEMA NUMBER VOLTS HP POS AMPS (inches) (inches) (inches) DRAWERS WGT PLUG
(lbs)
F18VD50 115 1/3 Left 6.0 36 50 31.5 2 520 5-15P
F18VD82 115 (2) 1/3 Left 12.0 36 82 31.5 4 720 5-15P
F17VD84 115 1/3 Left 6.0 36 84 31.5 2 750 5-15P
F2984VDL 115 1/3 Left 6.0 26 84 31.5 2 850 5-15P
F2984VDR 115 1/3 Right 6.0 26 84 31.5 2 850 5-15P
18650VDL 115 1/3 Left 6.0 34 50 31.5 2 520 5-15P
18650VDR 115 1/3 Right 6.0 34 50 31.5 2 520 5-15P
18682VDL 115 (2) 1/3 Left 12.0 34 82 31.5 4 720 5-15P
18682VDR 115 (2) 1/3 Right 12.0 34 82 31.5 4 720 5-15P
Refrigeration System
HFC-404A Refrigerant
Electrical Connections
115 Volt, 60 Hertz, single phase, 3-wire, grounded, 8' cord with plug
Drawers
32", 11-12 gauge stainless steel, 12" X 20" pan capacity
INSTALLATION
See the Installation and Operation Manual for installation information.
OPERATION
See the Installation and Operation Manual for operational information.
Legs
6" adjustable
Casters
5" casters, with and without brakes
OPERATOR MAINTENANCE
See the Installation and Operation Manual for operator maintenance information.
6
Versa Drawer Refrigeration Units
COMPONENT REMOVAL AND REPLACEMENT
Lo Profile and 2-Drawer refrigeration units use one compressor, one accumulator, one receiver and four solenoids. In addition, one evaporator is used for each drawer along with support components. The 4-Drawer refrigeration unit uses two complete 2-Drawer units. Component removal and replacement is similar for both types.
Perform the following procedures to remove and replace parts. To eliminate mistakes when ordering parts, always provide the following information:
• Model Number
• Serial Number
COVERS AND PANELS
Front Louvered Panel
NOTE: Front louvered panel removal is similar
for all models.
1. Lift up on louver from bottom and pull away from
unit (Figure 1).
2. Reverse the above step to install the front
louvered panel.
2. Lift louvered access end panel out and up to remove.
3. Reverse the above steps to install the louvered access end panel.
Rear Panel
1. While supporting the rear panel, remove 11 screws.
2. Remove the rear panel from the unit.
3. Reverse the above steps to install the rear panel.
DRAWER ASSEMBLY
Drawer Removal
1. Empty the drawer.
2. Pull and lift the drawer to remove it from the unit (Figure 2).
Front louvered panel
Figure 1. Front Louvered Panel
Louvered Access End Panel
NOTE: Louvered access end panel removal
is similar for all models.
1. While supporting the louvered access end panel, remove mounting screws.
Drawer
Figure 2. Drawer Removal
Drawer Gasket
The drawer gasket is installed on the inner side of the drawer front and fitted into a slot (Figure 3).
1. Remove the drawer gasket by carefully pulling the drawer gasket out of the groove.
2. Reverse the above step to install the drawer gasket.
Drawer Front Assembly
1. Remove the drawer from the refrigeration unit (Figure 3).
2. Place the drawer on a solid surface with the drawer front assembly down.
3. Remove six screws securing the drawer front assembly to the drawer.
4. Reverse the above steps to install the drawer front assembly.
7
Delfield
Drawer
front
Drawer
gasket
Drawer
switch
Figure 5. Drawer Switch
Screw
4. Tag and disconnect the wiring harness from the drawer switch.
5. Reverse the above steps to install a replacement drawer switch.
Figure 3. Drawer Front Assembly
Return Air Baffle
1. Remove screws from return air baffle (Figure 4).
2. Remove blue wires from drawer switch while supporting air baffle.
3. Reverse the above steps to install the return air baffle.
Return air
baffle
6 Screws
Figure 4. Return Air Baffle
Drawer Switch
1. Disconnect power from the refrigeration unit.
2. Remove the drawer as described previously.
3. Reach inside the box and carefully remove the drawer switch out of the mounting slot (Figure 5).
EVAPORATOR COIL ASSEMBLY COVER
NOTE: Evaporator coil assembly cover
removal is similar for all models.
1. The evaporator coil assembly cover is mounted behind the drawer (Figure 6).
2. Reach inside the box and remove four screws from the front of the evaporator coil assembly cover.
Evaporator coil assembly
Evaporator coil assembly cover
Figure 6. Evaporator Coil Assembly Cover
3. Tag and disconnect the fan electrical connectors.
4. Remove the evaporator coil assembly cover from the box.
5. Reverse the above steps to install the evaporator coil assembly cover.
8
EVAPORATOR COIL ASSEMBLY
Condenser
fan blade
Nut
1. Disconnect power from the refrigeration unit.
2. Remove the drawer as described above.
3. Remove the rear panel as described in COVERS AND PANELS.
4. Remove the evaporator coil assembly cover as described previously.
5. Follow the EPA guidelines for RECOVERY, PURGING/TESTING AND RECHARGING REFRIGERATION UNIT to recover the refrigerant from the refrigeration system.
Versa Drawer Refrigeration Units
Screw
Screw
Evaporator coil assembly
Figure 7. Evaporator Coil Assembly Removal
6. From the rear of the refrigeration unit, unsolder the refrigeration lines from the evaporator coil assembly.
7. Carefully remove the expansion valve thermocouple from evaporator line.
Evaporator coil
assembly
Expansion
valve (TXV)
Thermocouple
Figure 8. Expansion Valve and Thermocouple
4. Reach inside the drawer box and unsolder the refrigeration lines. Remove the expansion valve and thermocouple from the evaporator housing (Figure 8).
5. Reverse the above steps to install a replacement expansion valve.
CONDENSER FAN BLADE
1. Disconnect power from the refrigeration unit.
2. Remove the louvered access end panel as described in COVERS AND PANELS.
8. Remove the evaporator coil assembly from the unit (Figure 7).
9. Reverse the above steps to install a replacement or repaired evaporator coil assembly. Recharge the system as described in the EPA guidelines for RECOVERY, PURGING/TESTING AND RECHARGING REFRIGERATION UNIT.
EXPANSION VALVE
1. Disconnect power from the refrigeration unit.
2. Remove the evaporator coil assembly cover as described in COVERS AND PANELS.
3. Remove the expansion valve thermocouple from the evaporator line.
Figure 9. Condenser Fan Blade
3. While holding the condenser fan blade (Figure 9), remove the lock nut from the center of the condenser fan blade.
4. Reverse the above steps to install the condenser fan blade.
9
Loading...
+ 19 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use